Bert, GONZO, Ernie, and Elmo are all characters from the popular children's television show 'Sesame Street'. Bert is a four-letter word and is one of the Muppets who lives with his best friend Ernie. GONZO is a five-letter word and is a Muppet character who is known for his eccentric behavior. Ernie is also a five-letter word and is Bert's best friend who loves to play practical jokes. Lastly, Elmo is a four-letter word and is a furry red Muppet monster who loves to learn new things. All four of these characters are beloved by children and adults alike and are considered to be some of the most iconic Muppets.